UK players used to rely on phone bill deposits, often capped at £30 per...

https://blogfreely.net/teresa-long85/why-could-you-not-withdraw-to-a-phone-bill-deposit-method

UK players used to rely on phone bill deposits, often capped at £30 per transaction, which was easy but slow to process. Now, Faster Payments and mobile wallets let you deposit from just £10